As of the 2012-13 school year, the school had an enrollment of 1,603 students and 66.01 classroom teachers (on a FTE basis), for a student-teacher ratio of 24.28.[1][2] Brian T. Ginter is the principal. Greg Snyder and Robert Kerr are the vice principals.

Rio Americano produces a handful of National Merit commended students and a few National Merit semifinalists each year.[9] Rio students also perform well on Advanced Placement (AP) exams, with over 400 AP exam scores of 3 or better and over 100 AP exam scores of 5 (the highest score possible) in 2009.[10]

Rio Americano High School was established in 1963, built to offset a huge baby boomer population increase. As demand increased and Rio's academic and extracurricular programs proved strong, the school has remained a permanent fixture in the community. In 1983, the San Juan Unified School District was forced to close a high school due to budget constraints. Rio Americano and La Sierra were considered for closure. The school board closed La Sierra, whose plant remains in use for district activities, offices, and storage.

Rio has had only six principals since 1963. Joseph Brewer was the school's first principal. He was succeeded by Lloyd Snelson, who was followed by Alice Kubo. Ron Uzelac served as principal from 1985 to 2000. Rob Hollingsworth served from 2000 to 2009. Brian Ginter began in 2009.

The Rio Americano band program is nationally recognized, having 3 levels of concert band and 4 levels of jazz ensemble. The AM Jazz Ensemble has been recognized as one the United States' top 15 high school jazz bands at the Essentially Ellington Jazz competition in New York City in 2001, 2002, 2006, 2007, 2010, 2012, 2013 and most recently in 2014. The ensemble has also won the Monterey Jazz Festival in the High School Big Band category an unprecedented 7 times, and most recently finished third in 2011. They have also won the Reno Jazz festival in their division and/or in the sweepstakes every year since 1993, except for 2006. They have toured Japan, Europe, China, Australia, New Zealand, Argentina and Uruguay, and most recently Spain. They plan to visit Italy in the summer of 2014. The program is under the direction of Mr. Josh Murray and Mr. Max Kiesner. From 1982-2007 Mr. Craig Faniani was director and shaped the music program at Rio Americano to what it is today. Mr. F. has accepted a new position at the district office (2007–present)as the Coordinator for the Visual and Performing Arts for the San Juan Unified School District.

In 2005, the Academic Decathlon team placed 15th out of 17 school in the regional competition. With the arrival of new coaches and students in 2006, a team of eight juniors and one senior placed sixth out of 18. Coaches of other regional schools reportedly commented positively on Rio's improvement and success. In 2007, with six team members (the minimum number of students required to for a complete team), Rio placed fifth out of 23 competing teams with five gold medals, four silver, and four bronze. In 2010, the team placed 5th at the competition.

Rio Americano has a math team which participates in various math competitions and contests. One of the math competitions is Mathletes, in which teams of 5 students of various grade levels take 10-minute-long short-answer math tests to score points for their team by answering math problems correctly. Another math contest Rio's math team participates in is the AMC. The AMC consists of 25 multiple-choice math problems and is administered every February at school. Students who score well on the AMC move on to take the AIME.

Mock Trial is a year-round program that places students in a courtroom environment in which they act the parts of attorneys, witnesses, court clerks and bailiffs, in order to better their knowledge in the field of law. Each year the Team participates in competitions organized through the Constitutional Rights Foundations. Rio Americano's Mock Trial Team is known for its continuous record of success at both the County and State level Competitions. The Team has won 13 Sacramento County Championships: 1980, 1982, 1994, 1997, 1999, 2000, 2002, 2003, 2004, 2006, 2008, 2010, and 2012. The coach of Rio's Mock Trial Team is local attorney James "Jay" R. Greiner.

Rio's speech and debate class was canceled for the 2010-2011 school year. However, Speech and Debate still runs as a club.

In 2013, Rio Americano sent two members to the California State Tournament in Impromptu Speaking and Expository Speaking. The team also sent a member to the National Forensic League National Tournament in Lincoln-Douglas Debate. In 2013 and 2014, the team sent a member to compete in Dramatic Interpretation to the National Catholic Forensic League National Tournament. The team also barely missed qualifying to the National Forensic League National Tournament in Lincoln-Douglas a second year, placing as the first alternate.

Science Bowl is an academic competition sponsored by the United States Department of Energy that tests students in various categories of Science including Biology, Chemistry, Physics, Space Science, Earth Science, Energy, and Mathematics. At the 2007 Sacramento Regional Competition, Rio's Team A placed 2nd and Team B 3rd. The 2008 Regional Competition took place on March 1 at Rio Americano, in which Team A placed third and Team B fifth. Team C was unranked, as they were not permitted to move on to the double elimination stage. Rio's 2009 Team A took 2nd at the Sacramento Regional Competition, losing only to the eventual national champion team from Mira Loma. At the 2010 regional competition, Team A placed 2nd once again. Rio's Team A tied for 5th place in the 2011 regional competition. In 2012, Rio's Team B tied for 5th place at the regional competition which took place at Rio Americano.

Science Olympiad is a science competition with various events. In 2012, Rio placed 5th at the regional competition which took place at Sacramento State University, and tied for 6th place at the Northern California state competition. In 2013 and 2014, Rio placed 6th at the regional competition, barely missing the cutoff to attend the state competition.

The Mirada is the school newspaper. You can visit The Mirada's website by clicking here It is put together by students of all grade levels. Mostly juniors and seniors are editors, two seniors for editor-in-chief, and junior and seniors for News, Opinions, Features and Sports. The Mirada also has three graphic artists, and one main photographer. There are many staff writers of all grade levels. The paper even has a business manager. There are about 21 staff members overall, with one teacher supervising. The features are: Bachelor and Bachelorette, Prep of the Issue, Car of the Issue and sometimes food reviews. The paper has an issue every month and has won various awards. The raider icon on the front page to the side of the heading changes every month.

The school's yearbook is called the Tesoro. Each year the Tesoro has a different theme; "Generat10n", "The Grass is Greener", "Something in Common", "What's the Difference", "Curious", "Continued Inside", and "Raided R" are the most recent themes. The yearbook also features clubs, sports, outside-of-school activities, senior favorites, quotes and pictures. As a celebration of graduation, parents of seniors can submit a page, dedicated to their son or daughter in the "Diapers to Diploma" section.

This annual Open House activity turns Rio's physics classrooms into a miniature version of San Francisco's Exploratorium. Rio's physics students construct exhibits using the Exploratorium' science snack recipes or recipes developed by Rio's physics teacher, Dean Baird. The students then explain these hands-on exhibits to hundreds of local elementary school students on Rio's Open House day. ExploratoRio reopens during Open House night for the benefit of parents and visitors. Rio physics students are involved in all aspects of ExploratoRio production, including setup, elementary class hosting, photography, exhibiting, publicity, and take-down. ExploratoRio has been an annual, one-day-only event since 1994.

The Rio Americano chess club competes in local and state chess tournaments. During the 2010-2011 school year, the team participated in the NorCal online chess league competition, with the Varsity team finishing in 8th place, and the JV team placing 2nd.<[12] In 2011, the chess club placed 2nd in the Premier Division at the NorCal State High School competition. In 2012, the chess club placed 3rd place in the JV Division at the Norcal State High School competition.

Other active extracurriculars on campus include Speech and Debate, Interact Club, and Student Government.

Go Rio Raiders!Battle the foe for Green and Gold!Ready to meet all invadersWith our heads held high we will hear the victory cryAnd when the battle is overAnd on high you’ll hear our nameYou will know the Rio RaidersHave won another game!

1991 Future Pro Bowl lineman, Mike Flanagan, graduated from Rio Americano high school. Mike played for the Green Bay Packers from 1996–2005 and for the Houston Texans from 2006-2007. Chad Overhauser, also played for the Chicago Bears and Houston Texans.

1990 season: The varsity football team went undefeated during the regular season winning the Capital Valley Conference. They went on to beat Christian Brothers in the playoffs eventually losing to Nevada Union (which it previously defeated) in the City Championship. The team produced several Division I college players Stuart Wright (Army), Chris Lee (Weber State & Sacramento State), Eric Roof (Weber State), Mike Flanagan (UCLA) and Chad Overhauser (UCLA). The year was highlighted by a victory over Roseville team, which was led by future NFL All-Pro Tedy Bruschi. This team is widely considered to be the best in school history. Head coach Mike Smith was named Area coach of the year after the 1990 season.

1997-1998 season: The varsity football team won SVC league and lost to West HS in the playoffs. 1998-1999 season: The varsity football team were second seed in league and lost to Rio Linda in the playoffs.

In the 2002-2003 season the Raiders were 4-6. In the 2003-2004 the Raiders finished 5-5. In the 2007-2008 Football Season the Raiders went 5-5. The team produced four Division 1 College football players.

So far in the 2008-2009 season, the Varsity football Raiders finished 8-3, 4-1 in the CAL league and undefeated at home.They competed in the playoffs for the first time in 10 years.

Rio Americano's cheerleading squad consists of three teams: freshmen, junior varsity, and varsity. The cheerleaders perform at school rallies and attend every football game, all home girls' and boys' basketball games, and additional sporting events including Wrestling, Water Polo, and both Girls' and Boys' Soccer.

The Varsity Boys tied Jesuit High School in an exhibition match on Oct. 17th 2007, 0-0, and have consistently made it to the playoffs. They shared the Capital Athletic League title with Bella Vista in 2008-2009 finishing the regular season with a record of 12-3-6.

In 2009 the Varsity Boys, coached by Alan Posner, went undefeated in the Capital Athletic League and played in the Division III Championship Game, where they lost to its rival El Camino High School. The 2009 team featured many players who went on to play in college including: Austin Kinn (University of Pennsylvania), Tyler Kinn (UPenn), Grant Silvester (University of Virginia, where he won an NCAA National Championship), and Harris Levin (Pomona College).

The Rio Amercano Varsity boys have been section champions in 1996, 2003, 2010, and 2011. In 2011, the team beat El Camino, 9-2, in the Sac Joaquin Section Division II Championship. The Rio Americano Boys' Water Polo program has produced several college players including Division I players Brian Kinsel and Matt Hillard, both of whom played for UC Berkeley.

Starting the season with a Jack Scott Tournament win in 2002, the Rio Varsity Boys' basketball team won the Division II Section title at ARCO Arena and continued on to the state semi-finals held at UC Davis, finishing third in the state. The boys' basketball team won the 2006 and 2007 Jack Scott Tournament, a tournament hosted by Rio. During the 2007-2008 season, the Raiders won their second Jack Scott Tournament in a row. This was the first time they had won the jack Scott tourney three years in a row.( Kyle Odister, Pierce Burton and Mardell Johnson were the Leaders of this team)

The wrestling team is coached by Kelly Lanthier. She has coached there for three years. Greg Elie, a four-time Michigan State wrestling champion, is currently her assistant coach. His first year under Kelly Lanthier was their best year in history, bringing eight kids to the Master's Tournament. This feat has yet to be matched by any one in the history of the school.

The Varsity Girls' Soccer has been a consistently strong team. They were national ranked in 1999 and 2000. They were second-place finishers in Division II Section in 2001, losing 4-1 to Saint Francis. They won the section title in 2007, defeating Bella Vista 6-0 in the championship game.[citation needed] Under the coaching of Jennifer Smiley, they remained undefeated throughout their 2008, 2009, 2011, 2012, and 2013 season and won the Division III Section title.

The head coach of Rio Americano Swimming is Chris Nissen, who led the Varsity Girls to a Section title in the 2008 season, and the Varsity Boys to a second-place finish. Seniors Kevin Ferguson and Tomi Petty were the Capitol Athletic Swimmers of the Year, leading the team to victory at the Cal Champs meet. At the 2008 San Jauqin Sections meet the Raider's finished 2nd overall to Jesuit High.The Raiders's finished first in 2,the 200 and 400 yard free relay.

In 2010 both varsity teams took first in Championships as did the boys' junior varsity team. The girls' junior varsity team tied for second.

The Boys' Tennis Team has been division champions for the past six years. In 2008, Rio's tennis team lost in the section semifinals to Granite Bay High School. In 2014, Rio Americano won the D2 San Joaquin Section title under Coaches Todd Freund and Dave Pitts. The team repeated their success in 2015, winning the section title again and getting as far as Norcal Quarterfinals.

The Boys' volleyball team is currently coached by Gary Garrot and Ms.Sumnitra. In 2015, They defeated Ponderosa High School to become CIF SJS division II champs. They ended up losing to Campolindo 3-0 in the Norcal finals that same year.

The track & field teams are coached by Gordon Hubble and assistant coaches Tay Moore and Darin Carter. In 1990 Rio Americano's 4x100 relay team led California with a time of 41.80 set at the Sacramento Meet of Champions. The Rio Americano varsity boys' team won the 2007 SJS Division II Section title with a total of 46 points, beating Oak Ridge High School by 3 points. At the 2007 SJS Section Masters meet, the track team qualified four athletes to the CIF State Meet.

Rio, although lacking an officially-sanctioned rugby team, does have a team that plays under the name "Rio Rugby." The Team is coached by Jason Crothers, and took fourth place in the Sacramento Valley High School Rugby Conference. This is the seventh year of the Rio Rugby Club. Players do not come exclusively from Rio, some come from nearby El Camino High School.

Rio Americano offers Academia Civitas, a four-year program of political studies. The program offers one semester each of Political Studies and State & Local Government in Freshmen year. Sophomores take one semester of Public Speaking and one semester of International relations. Juniors take a year of Philosophy. Seniors have no civitas class, but instead do a senior project, which can consist of forums and other community events. The Civitas program provides students with advanced and specialized learning in the social sciences and an enriched sense of citizenship.

^Viers Mill School Wins Blue Ribbon; School Scored High on Statewide Test; The Washington Post. September 29, 2005 "For their accomplishments, all three schools this month earned the status of Blue Ribbon School, the highest honor the U.S. Education Department can bestow upon a school."

^"His name is linked with 49ers' deal for Rice", Sacramento Bee, December 12, 2004. Accessed November 1, 2007. "Trevor Matich is an inspiration to any child who wants to compete in sports but is often told he or she isn't good enough.... Yet he persevered, became a highly recruited high school player at Rio Americano and went on to BYU..."